#!/bin/bash
function s1_goto_dir() {
    cd "$1"
}

function s2_touch_empty_file_with_given_name() {
    touch "$1"
}

function s3_make_directories() {
    mkdir -p ./projects/{git/,backup/}
}

function s4_create_6_files() {
    touch ./projects/linux{1,2}_{centos,redhat,c_programming}
}

function s5_make_directories_in_git() {
    mkdir ./projects/git/linux{1,2}
}

function s6_move_files_to_dir_1_or_2() {
    mv ./projects/linux1* ./projects/git/linux1 && mv ./projects/linux2* ./projects/git/linux2
}

function s7_create_package_and_compress() {
    tar -czvf ./projects/backup/git.tar.gz ./projects/git
}

function s8_delete_dir_git() {
    rm -rf ./projects/git
}

function s9_recover_from_git_tar_gz_backup() {
    tar -zxvf ./projects/backup/git.tar.gz ./projects/
}

function s10_create_package_and_compress() {
    tar -jcvf ./projects/backup/git.tar.bz2 ./projects/git
}

function s11_find_and_sort_alphabetically_all_created_files_and_dirs() {
    find ./projects | sort
}

function s12_get_next_15_minutes_boundary() {
    date -d "@$(($(date +%s) - $(date +%s) % 900 + 900))" +"%Y-%m-%d_%H:%M:%S"
}
